Row sums of number triangle A110180.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =15a(5) =42a(6) =131a(7) =432a(8) =1497a(9) =5420a(10) =20373a(11) =79422a(12) =319927a(13) =1328764a(14) =5677653a(15) =24904584a(16) =111961129a(17) =515029020a(18) =2421047613a(19) =11616330342a(20) =56829235095a(21) =283211069352